Fluid filter



Feb 135 l940- J. F. AUBERSCHEK 2,190,305

FLUID FILTER Filed Dec. 15, 1938 2 sheets-sheet 1 M 43 Inventar' J.F.Hu't1E1"5|:l-IEK fw Wg J. F. AUBERSCHEK Feb. 13, 1940.

FLUID FILTER Filed Dec. 15, 1938 2 Sheets-Sheet 2 InVE ntl: 1" T.FlulnersCl-IEK ttnrnag :sol

Patented Feb. 13, 1940 n FILTER" Joseph Auberschek, Milwaukee, IVWis. -Application December `15, 1938," Serial No. 245,874

` 1 claim.4` (cll;,z1o -1.;1 )`v This invention appertains to filters, and more particularly to an improved lter for uids, such as oil, water, and thelike. i

One oi' the primary objects of my invention is to provide a ilter which can be successfully used for ltering and reclaiming crank-case oil from internal combustion engines, as well as other liu,

uids, and which embodies a novel holder` for wood pulp or other ltering material, whereby such material will be held in a` compact mass;

Another prin'lecbject of my invention is to provide a novel holder for theiltering material, which can be used in either gravity or pressure filters. n i n A further-important` object of my invention is to provide means for insuring the proper packing of the niter mass at the bottom of the holder and around the fluid" outlet, whereb-ylthe seeping of uniiltered liquid into the-outlet willube prevented. v

A still further object of my invention is to provide a filter'of the above character,`which will be durable and eiilcient in use, one thatl will be simple and easy to manufacture, andone which can be conveniently kept in alclean condition.

With these and other objects in `view,thein vention consists in the novel construction, arrangement, and formation ofparts, as `will be hereinafter more specifically described, claimed, and illustrated in the accompanying drawingsrin which drawings: i l Y Figure l is a vertical, sectional View through one of my improved ltersrof `the gravity type, and which is particularly adapted foriiltering `oil drained from the crank-casesfof internal combustion engines. l

Figure 2 is an enlarged, central, vertical, sec-- tional view through a filter constructedjin accordance with my invention for use'in connection with faucets. G 1

,Figure 3 is a vertical, sectional .view-'through a still further form of myinvention, thefview `being taken substantially on. the-line-313 of Figure 4, looking in nthe direction `,of the arrows. Figure 4 is a horizontal, sectional View through the filter `shown in Figure 3, the section being taken substantially on the line 4-4 of `lligure 3, looking in the directionof the arrows.'4 I

Figure 5 is a detail, fragmentary,` Vertical', sectional view taken on the line "5-15 of Figure 3, looking in the direction of the arrows.

Referring to ythe .drawings in detaihwherin similar reference characters `designate corresponding parts throughout the 'severalviews, the letter F generally indicates one form'of my `iiltei,

which includes a bottom tank Iffor receiving clean, iiIteredliquid, andfa `top tank I Il for receiving the liquid to be ltered. l l y Thetan'ks I0 and II can be of anydesired size, type,l or shapefand, as shown, the bottom tank I0 5 `isiianged to form a shoulderon which the top l tank can "rest, If desiredyanlangleiron Support I2 can'be welded or otherwise' securedv to the inner surface of the tank Ill to Vform an additional support for the utank u. The inter E caribleof the 10 gravity type, and, thus, the upper end of the l tank II can be left open to `permit the introductionof liquid into the same. The upper end of the tank can be closed, however, by a removable cover I3." 1 L15 Located centrally within the tank II isthe` novel holder I4 for the filtering material .I 5.` Ih'e filtering 4material I5 is preferably formed from loose paper pulp, although Vother lteringv material can be used without departing' from the '20 spirit of my invention. prefer touse the loose paper pulp, as the same canbe washedclean, and

fthe same forms an ideal means forfpreventing the passage offoreign matter through tl'iesame.

I `The holder I4 includes a `base` I6, Wl1ich`ean'25 be cast or otherwise formed, `and theupper'surface of. the base has formed therein Vannular con` Acentricchannels II. These channels H have tapered Walls, for apurpose whichlwillfb'e 'later set forth.' The base also has secure'draxially L30 therein the ltering tubeil.y The Vtube I 8"pro` -trudes below the base I6 and is adapted to b'e detachablysecured ina neck'or fitting .Islcarried Vbythe bottom wan of the took' Il;A The oncologi` j .tube I8is provided with afplurality of .minuteperforations 20,' whereby. liquid' )can I enter. `the tube, butsolid matterwill rbe heldback. Antannular seat.2 Ifis formed around the margin of the" .4 base I6, and this .seat `receives Ythe ,cylindrical ,sidewall 22 fof :the holder, and this side wenn@ detachably connectedwiththe `basein de-y sired way; `suh as thrueh the 0i a bayonet joint connection 2,3.'` Minute perforations 1,Zliiaijey f `also formed in l n `the flow or. liquid into the holder.l A spider 25 theside wa1lf212,so asto permit `is carried by the ,top ,of `the :side wou 2 2; ,and this spiderv is `firmly secured to the Side Wall `by adjustable fastening elements 1255.., i I

" `The holderis `adapted to receive the loose paper `pulp 0r other ,lterne material; ani .thepulp Packed. tightly inte the holsi'elf Ontofbh bas IB around the 4filtering tube n I 8i To insure `the propr er packing of the ltering material, a relatively heavy rouoyvr plate 421 is utilized; This follower plato 21 is positioned monomer on top or Vthe #6 2 impurities, as the filtering massv will effectively the filtering material into the tube I8, and into' the receiving or bottom tank I0. The oiljfiowing into the bottom tank l will be free from retain the impurities. Toallow for the escape of air from the tank I8 as the oil or other liquid flows into the same, a relief pipe 3| is provided. This pipe opens out through the bottom wall of the' tank Il and terminates substantially at the upper end of the tank. The tank ll itself can -be provided adjacent its upper end with a handoperated valve 32 for allowing the escape of air and other-gases. To permit the cleaning of the tank ll, the same is provided with a drawolf valve 33 at itslowerend. The filtered oil from v.the tank Hlcan be drained from the tank by a faucet 34.

Ifl desired, both the tank l0 and the tank Il can be provided with any type of gauges for indicating the height of liquid therein. l

After the pulp has been used a' predetermined length of time, the holder I4 is removed from the tank, andthe spider 2 5 and the follower plate 21 `liti.

are taken o ff the holder. The filtering material is now removed therefrom, and the samewlll be found to be in a solid mass or cake. ,When this mass or cake is washed, the same will again separate into its fine pieces.; Hence, the filtering material can be thoroughly cleaned in a short time with aspecially designed washer. The pulp Kcan be sterilized by boiling orsteaming.

In Figure 2, I have illustrated one type of my filter which Ais particularly adapted for use on water faucets. Thus, the filter shownv in Figure .2 embodies a receiving vessel 35 having a side vWall 36 anda bottom wall 31. `The vessel is adaptedto be closed by a removable top plate-38. Thisplate is rmly held on the vessel by the use of adjustable fastening elements 39, and the cen- 'tral portion of the plate is provided with a threaded neck 40 for connection with a faucet. Arranged within the vessel 35 is a perforated screen 4|, and this` screen v4I is placed in slightly spaced relation tothe side wall-36'. `The cover plate 38 has formed thereon a depending rib 42, which extends between the screen 4l and the wall 36, so as to insure the`proper spacing of-the screen from the side wall. A

' Extending axially into the Vessel through the bottom wall 31 thereof is the filtering tube 43,

v'This rib is of a substantial Vshape'in" cross-'section, and the purpose of the same will-hereinafter ,more fully appear. The top wall canbe provided with an air or vapor' relief valve'.`

` Theffiltering .pulp 4.45 or other material-'is packedinto the vessel:aroundl the tube `43 and within the perforated screen or sleeve 4l, and after the pulp has been placed in position, the same is held under pressure by the follower plate 46. Ihe follower plate 46 is normally urged downwardly by means of an expansion coil spring 41, which is confined between the follower plate and the cover plate 38. It is also to be noted that the follower plate 46 has formed in its lower surface a plurality of concentric channels 48, and these channels have communicating ltherewith perforations 49, whereby liquid can iiow past the plate through the filtering material. By having the rib 44 in the filter, the filtering material is spread at the bottom of the filter and is forced tightly against the tube 43 and the screen. Thus, liquid will be prevented from seeping past at this point in an unfiltered condition. Obviously, the walls of the channels l1 in the base I6 perform the same function for the filter shown in Figure 1.

In Figures 3, 4, and 5, I have illustrated one yof my filters of the tank type, which filter is more or less operated by liquid pressure. Thus, the filter shown in Figures 3, 4, and embodies a receiving tank 59, which includes a bottom wall 5I and aside wall 52. 'I'he tank can be supported in an elevated position in any desired manner, such as lthrough the medium of legs or standards 53.

The tank 50 is adapted to receive the novel holder 54, which is arranged in spaced relation to the walls of the tank. The tank 59 is provided with a removable cover plate 55, which is rmly held on by removable, adjustable fastening members 56. The bottom of the tank at its axial center is provided with `a fitting or sleeve 51 for receiving a pipe 58, which is utilized for con` to allowl the seeping of filtered liquid therein. A

marginal .flange 63 is formed on the base, and r the perforated screen or side wall 64 of the holder is adapted to rest on the ange. The side wall can be connected to the base by bayonet joint connection'65, clearly shown in Figure 5 of the drawings. If desired, a band 66 can be placed around the side wall 64 and on the harige 63, so. as to cover the pins and slots of the bayonet joint 6 5.

vAs illustrated in Figure 3, the side wall 64 can be of va split construction, and the side wall at the split can be connected by bolts 61 passing through ears 68 formed on the side wall. The lupper end of the side wall carries a spider- 69,

: and'the spider is firmly connected to the' said side wall by removable and adjustable fastening elements 10. The spider and the top wall have' interposed therebetween an expansion spring 1|, and this spring `functions to place pressure upon the holder, so that the same will vbe rmly held within the tank. The top wall of the tank carries a screw 12, and this screw extends through the spider 69, and into engagement with a follower plate 13, which is arranged l ontopipf the filtering pulp disposed within the `liquid can flow pipe.

holder. The filtering pulp is packed within the holder, after which the follower is placed in position and the other parts of the device are assembled. After assembling, the screw l2 can be tightened so as to urge the follower plate down tight on the pulp, to cause the tight packing of the pulp within the holder.` A 4 The follower Iplate 'i3 is of the type shown in Figures l and `2, and, hence, the lower face of the same is provided with a plurality of concentric channels lli, and these channels have communicating therewith perforations 15. Obviously, into the filtering material, through the perforations in the screen 64, and the follower plate 73.

The liquid to be ltered is forced under pressure into the tank'through the pipe 16, and this liquid will gradually be forced through, the filtering material and into the tube 62, and out of the pipe 5% A hand-operated control Valve 'VI can be placed Within the length of the pipe "It, so `as to control the iow of liquid through the The tank 5t adjacent its upper end is provided with a relief valve 18, and the tank `adjacent its lower endy is provided with va draw. pipe 79, whichpermits the `washing of the tank andthe drawing off of undesired material from the tank.

From the foregoing, it can be seen that I have provided an exceptionally simple and durable form of filter, in which loose flocculent material,

such as paper pulp, can be ,successfully used as the filtering medium.

Changes in details maybe made without departing from the spirit or the scope of my invention, but what I claim as new is:

In a lter, a tank for receivingr the liquid *to` be filtered, a holder disposed in the tank including, a base plate, a perforated side wall connected to the base plate, and a spider carried by the top of the side wall, a perforated filtering 

